ccna discovery4.0 final 3rd module

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Exam Viewer - DRSEnt Final - CCNA Discovery: Introducing Routing and Switching in the Enterprise (Version4.0)

31

Refer to the exhibit. Both routers are configured to use the EIGRP routing protocol. However, when the show ip eigrp neighborscommand is issued at R1, the output displays that the routers are unable to establish adjacency. What is the possible cause of thisproblem?

EIGRP routing is incorrectly configured at R1.The autonomous system number is the same on both routers.

The no auto-summary command is applied on both routers.The IP address of the serial interfaces of both routers is incorrectly configured.

Scoring Rule For: correctness of response

2 points for Option 10 points for any other option

Max Value = 2

This item references content from the following areas:

CCNA Discovery: Introducing Routing and Switching in the Enterprise

5.4.3 Verifying EIGRP Operation32 What are two correct host addresses in the 172.16.64.0/23 network? (Choose two.)

172.16.64.0172.16.64.255172.16.65.1172.16.65.255

172.17.64.1


of 12Cisco Networking Academy

5/9/2009mhtml:file://C:\Documents and Settings\mac\Desktop\cisco\disc\Cisco Networking Academ...

Option 2 and Option 3 are correct.1 point for each correct option.0 points if more options are selected than required.

Max Value = 2



4.2.4 Variable Length Subnet Masks (VLSM)33

Refer to the exhibit. Which VTP function will this switch perform?It will create, change and share local VLAN information with other switches in the XYZ domain.It will forward to other switches the VLANs that are created in Switch1.It will back up the VTP database for domain XYZ.

It will forward VTP configuration information for domain XYZ.



Max Value = 2



9.2.3 Troubleshooting VTP34 Which two statements are true about VLAN implementation? (Choose two.)

The size of the collision domain is reduced.The number of required switches in a network decreases.VLANs logically group hosts, regardless of physical location.The network load increases significantly because of added trunking information.

Devices in one VLAN do not hear the broadcasts from devices in another VLAN.



Max Value = 2



3.3.1 Virtual LAN35 Which WAN connection method uses a PVC?

leased lineISDN

DSLFrame Relay





Max Value = 2



7.1.4 Packet and Circuit Switching36 What are two features of an extended IP ACL? (Choose two.)

It uses numbers 1 through 99 for identification.

It can permit or deny traffic based on source or destination address.It detects malicious attacks against the network and logs them on a server.It can filter traffic based on the protocol and port numbers.It encrypts traffic between hosts.



Max Value = 2



8.1.3 Types and Usage of ACLs37

Refer to the exhibit. All routers are configured to use OSPF with the default configuration. The network administrator wants to ensurethat R1 will be the DR when the routers are booted.

What are two ways the network administrator could accomplish this goal?Configure the OSPF priority value of the Fa0/0 interface of R1 to 0.Configure the router ID of R2, R3, and R4 to a higher value than R1.Change the priority value of the Fa0/0 interface of R2, R3, and R4 to 255.Configure a loopback interface on R1 with an IP address higher than any IPaddress on the other routers.Configure the OSPF priority value of the Fa0/0 interface of R1 to a higher value than the Fa0/0 interface of any other router.



Max Value = 2





6.1.3 OSPF Neighbors and Adjacencies38 What are two characteristics of a static route? (Choose two.)

A static route can be used by border routers to provide secure and stable paths to the ISP.By default, a static route is more secure than dynamic routing.

A static route automatically adapts to topology changes.A static route can only be used with classful addressing schemes.A static route creates processing overhead in a large network.



Max Value = 2



5.1.3 Static and Dynamic Routing39

Refer to the exhibit. A network administrator wants to block Telnet sessions from host B to hosts E and F. Where should ACL 110 beplaced if the administrator follows Cisco best practices?

on the Fa0/0 interface of R1 inboundon the S0/0/0 interface of R1 inboundon the S0/0/0 interface of R3 outboundon the Fa0/0 interface of R3 inbound



Max Value = 2



8.1.4 ACL Processing40 What is an advantage of using a default route?

They never fail.



They reduce the size of the routing table.They prevent routing loops between the edge router and the ISP.They transfer traffic from the Internet to the network.



Max Value = 2



5.1.5 Default Routes41

Refer to the exhibit. The network administrator has used classless routing in the network. What is the result of running the displayedcommand?

All packets that are destined for address 10.12.0.1/22 will be forwarded via serial0/0/0.All packets that are destined for address 10.12.14.0/22 will be forwarded via serial0/0/0.

All packets that are destined for address 10.12.16.1/22 will be forwarded via serial0/0/0.All packets that are destined for address 10.12.15.255/22 will be forwarded via serial0/0/0.



Max Value = 2



4.3.2 CIDR and Route Summarization 5.1.4 Configuring Static Routes

42 Once the root bridge has been determined, which two items are assigned to every other switch before STP converges a switchednetwork? (Choose two.)

VLAN ID

root portfull-duplex portdesignated portdiscarding port



Max Value = 2



3.2.3 Root Bridges43



Refer to the exhibit. All switches are configured with default bridge priority. Which two ports will definitely be elected STP designatedports if all links are operating at the same bandwidth? (Choose two.)

Fa0/1 interface of switch AFa0/2 interface of switch AFa0/2 interface of switch BFa0/1 interface of switch CFa0/2 interface of switch C



Max Value = 2



3.2.4 Spanning Tree in a Hierarchical Network44 Which two statements describe the default settings of VLAN 1? (Choose two.)

VLAN 1 is the native VLAN.VLAN 1 is only created on a switch when other VLANs are configured.

VLAN 1 provides the default-gateway address for all VLANs on the switch.Remote configuration of the switch is accomplished through VLAN 1.VLAN 1 is disabled to reduce the security risk of intruders who might gain access to unused ports.



Max Value = 2



3.4.2 Extending VLANs across Switches45 Which two statements are correct about Cisco HDLC encapsulation? (Choose two.)

It defines a Layer 3 framing structure.It supports multiple network layer protocols.It supports the callback option on serial links.

It is the default encapsulation type on Cisco router serial links.It uses a layered architecture to encapsulate multiprotocol datagrams.


Option 2 and Option 4 are correct.



1 point for each correct option.0 points if more options are selected than required.

Max Value = 2



7.2.2 HDLC and PPP46 Which two statements are correct about a single area OSPF network? (Choose two.)

The DR and BDR reduce the number of updates that are sent on a broadcast network.

The BDR is responsible for distributing changes to all other OSPF routers.Routers use hello packets to establish and maintain neighbor adjacencies.All OSPF routers receive updates on multicast address 224.0.0.6.There must always be an area 1.



Max Value = 2



6.1.3 OSPF Neighbors and Adjacencies47

Refer to the exhibit. How will Switch2 respond to the VTP advertisement sent by Switch1?It will ignore the VTP advertisement.It will add two VLANs to its database.It will change its configuration revision number to 4.

It will send the VTP advertisement to Switch1 to delete the two VLANs.



Max Value = 2





3.5.1 VLAN Trunking Protocol (VTP) 3.5.2 Configuring VTP

48 A company is trying to decide whether to use a PVC or an SVC for the company WAN connection. Which statement best describes abenefit of using a PVC?

A PVC is dynamically established between two points when a router requests a transmission.A PVC eliminates the need for call setup and clearing for each transmission session.A PVC is best suited for small companies with sporadic data flows.

A PVC does not require preconfiguration by a service provider.



Max Value = 2



7.1.4 Packet and Circuit Switching49

Refer to the exhibit. Both switches have been configured with static VLANs. Host A and host C belong to one VLAN and host B and Dbelong to another VLAN. However, the hosts within the same VLAN are unable to communicate with each other.

Which troubleshooting approach should be followed to resolve this problem?Explore the possibility of adding a router to the network.Ensure that both switches are configured for the same native VLAN.Ensure that the ports connecting the two switches are configured as trunk ports.

Ensure that both switches are configured with an IP address in the same subnet.



Max Value = 2



3.4.1 Trunk Ports50 Which two statements correctly describe the features of IEEE STP? (Choose two.)



It immediately transitions all ports that are not discarding to the forwarding state.It provides a mechanism for disabling redundant links in a switched network.It has three port states: discarding, learning, and forwarding.It ensures that there are no loops in the switched network.

It converges the switched network in less than 1 second.



Max Value = 2



3.2.2 Spanning Tree Protocol (STP)51

Refer to the exhibit. The network administrator configures R1 as displayed. However, some hosts from Network A are unable to accessthe Internet. Which two actions can resolve this problem? (Choose two.)

Configure the ip nat inside and ip nat outside commands on the correct interfaces.

Increase the number of IP addresses in the NAT address pool.Configure the Fa0/0 interface of R1 for a different subnet.Use PAT instead of dynamic NAT.Use static NAT.



Max Value = 2



4.4.3 Static and Dynamic NAT52 What are two differences between RIPv1 and RIPv2? (Choose two.)

RIPv1 broadcasts routing updates to 255.255.255.255 while RIPv2 does not.RIPv1 sends subnet mask information in the routing update but RIPv2 does not.In contrast to RIPv1, RIPv2 allows the use of discontiguous networks.

RIPv2 is a classful routing protocol while RIPv1 is a classless protocol.RIPv1 supports an authentication mechanism but RIPv2 does not.





Max Value = 2



5.2.2 Routing Information Protocol (RIP)53 Where are EIGRP successor routes stored?

only in the routing tableonly in the neighbor table

in the routing table and the topology tablein the routing table and the neighbor table



Max Value = 2



5.3.3 EIGRP Terminology and Tables54

Refer to the exhibit. R1 is using the default OSPF operation. Which IP address will be used as the router ID of R1?192.168.201.1172.16.1.110.10.10.1

10.1.1.1



Max Value = 2



6.1.3 OSPF Neighbors and Adjacencies55 What is the function of Inverse ARP in a Frame Relay network?



It maps the IP address to the MAC address.It maps the MAC address to the DLCI.It maps the DLCI to the remote IP address.It maps the local IP address to the remote MAC address.



Max Value = 2



7.3.2 Frame Relay Functionality56

Refer to the exhibit. None of the hosts in network A are able to access the Internet. How can this problem be resolved?Configure dynamic NAT instead of PAT.Configure the access list for the correct network.

Include the ip nat pool command in the configuration.Configure the ip nat inside command on the correct interface.



Max Value = 2



4.4.3 Static and Dynamic NAT 4.4.4 Using PAT

57 Which two wildcard masks are required in an extended access list statement that blocks the traffic from network 192.168.20.0/26 tonetwork 172.16.32.0/28? (Choose two.)

0.0.63.255

0.0.0.630.0.0.310.0.0.150.0.0.0



Max Value = 2





8.2.1 ACL Wildcard Mask Purpose and Structure

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